Polishing machine



Oct. 18, 1932. K. c. BUGG POLISHING MACHINE Filed Aug. 10. 1929 Patented Oct. 18, 1932- curren -STATES KELTLY'C. nose, or sr. rouIsJnssoum rorlrsnrne MACHINE a neau n med August 10, 1929. Serial 110. 385,009.

This invention chines. H

An object of the invention is to provide a portable polishing machine comprising a rorelates to polishing ama- Y tary support for the polishing members, in

combination with devices. for pressing the polishing members yieldingly against the surfaces to be polished automatically and as an incident tothe operation of the machine and irrespective of theshape or form ofthesurconnections and controlling switches, which matters are well within the skillof the mefaces. a f Another object isto provide means in con- "nection Withthe machine of my application Serial No. 368,787, filed June 6', 19295 for pressingthe wipers'against plane or irregular surfaces.

-Other objects will appear from the following description, reference being made to the accompanying drawing inwhich- Fig. 1 is a vertical sectionalview of the housing of my improved machine, the operative mechanism being shownin elevation.

Fig. 2 is a plan view of the machine;

Fig. 3 is a horizontalsectional viewapv proximately on the line 3 3 of Fig.1.

Fig. 4 is a sectional view approximately I on the line 4 -5 of Fig. 1,.showing the wipers pressed against an outwardly rounded or ;ovolo surface. 1 I. Fig. 5 1s a simllarsectional vlew on the line 45 of Fig. 1 showing the wipers pressed,

1 into a groove. 1 I v v Fig.6 is a plan View and aside elevation view'of the presser device for the wipers. Fig. 7 is a plan yiew'and a side elevation view of one of the wipers,

- The-polishing device is confined within a housing comprising two end walls 1 and 2 and x a curved .wall 3 having its marginal edges attached to the walls 1 and 2 and cooperating therewith to form an enclosure which is open on one side. The marginal edges of the walls 1, 2 and -3 arerolled to form a :bead 4 and 1 this beadis of] closed by a strip of non-abrasive fibrous material 5. One edge of this strip 5 i 15 are of'less width and less length than'the lies against and issecured to the inner marginal portions of the walls 1, 2 and 3, and the outer portions of said strip;is folded to enclosethebead 4 and to lie against the outerv side of said walls1,2 and 3. The marginal I portion of said strip 4 is clamped. against the walls 1, 2 and 3 by a band 6 surrounding the walls 1, 2 and 3 abovethe bead 4. Thus a protected edge for the housing is provided so thatthe housing may be moved along the smooth surface that istobe polished by the polishing machine without scratching or marring said surface. 7 A suitable motor'7 is supported by the wall 2 and is energized by any appropriate circuit chanic and, therefore, are not shown in the drawlngs. The motor shaft 8 is supported for operation approximately parallel with the 1 wall '1. A framev for supporting the polishing wipers is attached to theshaft 8 within the housing. This frame comprises a hub block 10 rigid on the shaft 8 and having attached thereto a number of arms 11.

- A non-metallic fibrous wiper and a presser device therefor is attached to each of the frame arms 11 by clampingscrew bolts 12.

These screw bolts pass through the inner marginal edges of the respective wipers'and through the supports forthe presser devices and through the frame arms 11, which are overlapped by said wipers and said presser device supports, as shown in Fig. 1. Each ..w1per-compr1ses,a fibrous body or sheet 13 secured to the corresponding frame 11, as

- described, and having its outer portion split to form fibrous arms 14, which are disconnected and are in abutting contact through out their length. The actuators or pressers for these wiper arms 14 comprise spring arms 15'pressing against the rear sides of the wiper arms, 14 and formed in connection with a supporting plate .16 interposed between the fibrous sheet 13 and the adjacent arm 11 of the supporting frame. These spring arms ty. for these metallicspring arms to contact with the surface being polished. Thisconmately equal pressure is applied to all of the wiper arms so that said wiper arms operatev with approximately equal pressure against all ofthe portions of these plane or rounded surfaces. I

The outer edges of the respective arms 11 and the overlapping portion 13 of the wipers are braced and strengthened by frame members 17 having their ends attached to the outer ends of the respective frame arms 11 by removable screw bolts15. Asshown, one end of each-frame member 17' abuts against the forward side of an adjacent frame arm 11 and the opposite end of said frame member 17 is clamped against the wiper sheet .13 that is attached to the next follo-wingiframe arm 11.. 7

As shown, it is essential that the frame members 11 andl7 do not extend to the plane of the edges of the walls 1, 2 and 3, but that the wiper armsld and the pressers 15 therefor are of such length that they may extend well beyond the edges of said walls. For, if

the frame members 11 and 17 extend to the edges of the walls '1, 2 and 3,.the surface of the articles beingpolished would thereby be scratched and marred during operation ofu the machlne.

, Within the housinga bloclr 18 of pumice stone or other appropriate materialis secured by a removable fastener .19. This block 18 is. in. such position that it is slappedby the wiper arms 14 during operation ofthe machineinorder to chargethe wipers with mi- .nute particles of the stone or. the like so that the wipers will constantly operate in themost efficient manner. Sufficient pressure is applied to the wiper arms 1e by the presser arms 15 to cause said wiper arms to operate properly-against the block 18. Further,sand paper or other abrasive sheetsmay be used instead of the fibrous wipers mentioned. To opposite sides of the wall. 3'r'emovable handles 20 are attached by fasteners 21. These handles 20 are for manual engagement in moving and operatlng. the machine from place to place and along the surface of the articles to bepolished. i V In using this device the motor 7 is kept in constant operation, thereby operating the polishing device in the direction indicated by the arrow 22 in'Fig. 1. The machine is supported on or against the surface of the arto 'saidlshaft within said housin ticle to be polished, the non-abrasive surface l of the housing sliding along said surface. The motor rotates the frame within the housing in the direction indicated by the arrows 22, causing the polishing arms 14 to contact with and rub and wipe the surface to be polished, sufficient pressure being. applied against said polishing arms 13 by the springs 15. The machine is easily manipulated and moved from place. to place and in operation.

It is clear that the machine obtains all of its intendedobjects and purposes in a highly eflicient and satisfactory manner.

The constructionand arrangement of the elements of this machine may be varied within equivalent limits without departure from the nature and I claim: V 1. A device of the character described comprinciple thereof.

prising two spaced end walls having alined supporting'edges, a curved wall attached to said end walls and cooperating therewith to form an enclosure which is open at the side along which said supporting edges of said end walls extend, non-abrasive elements 1n connection withsaid supporting edges of said end'walls, a rotary shaft supported by said end walls, aFmotor supported by one of said end walls for rotating said shaft, a frame attached'to said shaft within saidenclosure, and aseries of wipers attached to and having wiping portions projecting beyond said frame and'arranged to wipe against a surface along which the device is moved and on which the device is supported by said nonabrasive material.

- 2.' A device of the ch aracter; described comprising a pair of spaced end walls, a curved wall attached to said end walls and cooperating therewith to form an enclosure which is open at one side, non-abrasive material in connection with the edges of said walls at the open side ofsaid enclosure for. supporting said enclosure on a surfaceto be polished, a.

motor supported byj-one. of said end walls,,a motor shaft projecting from and adapted to be rotated by. said motor and. extending through said enclosure, a frame attached to said shaft within said enclosure, and a se- 'ries of wipers attached to said frame and having wiping portions projecting beyond said frame and arranged to'operate against and along. the surface to be polished when said housing is moved along said surface and said frame isrotated. I

3. A device of the character described com- ."prising walls forming a housing and having an open SlClB,'IlOIl-EIbI'ZIS1VQ material in connection. with the edges of said walls at the open sideiof said housing for supporting the housing on a surface to bepolished, a motor supported by oneof the walls of said housing, a shaft rotated by and project-ing from the motor through said housing, a frame attached wipers attached to and having wiping portions projecting beyond said frame and arranged to operate against and along the surface to be polished when said frame is 1'0- tated, a device supported within said housing for impregnating said wipers with an abrading substance automatically and as an incident to the rotation of said frame, and resil-- ient means supported by said frame for 10 pressing said wipers against said impregnating means. I

KENLY C. BUGG. 

